JavaScript must be enabled in order for you to use Knowledgebase Manager Pro. However, it seems JavaScript is either disabled or not supported by your browser. To use Knowledgebase Manager Pro, enable JavaScript by changing your browser options, then try again.
Learn more.

Celecoxib

Celecoxib is separated from an impurity in this simple gradient method. The peak shape obtained for the API is excellent and shows good peak symmetry. In addition, the method shows good repeatability from run to run. The API retention time %RSD from five runs was 0.025%. The five run overlay chromatogram is shown in Figure A. Figure B shows a zoom-in view so that the impurity peak can be seen clearly. Another benefit of the method is that the mobile phase is MS-compatible.